Finish the game without using Vita-Chambers.

Unlocked: 16 Feb 2013 05:31 pm

Max out research on all 9 research subjects.

Unlocked: 16 Feb 2013 05:12 pm

Saved every Little Sister and spared Grace, Stanley and Gil.

Unlocked: 16 Feb 2013 04:29 pm

Gather 600 ADAM with Little Sisters.

Unlocked: 16 Feb 2013 02:46 pm

Get through a Gather with no damage and no one getting to the Little Sister.

Unlocked: 14 Feb 2013 06:59 pm

Escaped Rapture.

Unlocked: 14 Feb 2013 04:35 pm

Finish the game on the hardest difficulty level.

Unlocked: 14 Feb 2013 04:35 pm

Headed to the surface on the side of Sinclair's escape pod.

Unlocked: 14 Feb 2013 04:32 pm

Find all 14 Power to the People weapon upgrades in the game.

Unlocked: 14 Feb 2013 04:21 pm

Find or purchase all 11 basic Plasmid types.

Unlocked: 14 Feb 2013 03:34 am

Reunited with your original Little Sister.

Unlocked: 14 Feb 2013 03:33 am

Fully upgrade to the maximum number of Plasmid Slots.

Unlocked: 14 Feb 2013 03:33 am

Find 100 audio diaries.

Unlocked: 14 Feb 2013 03:30 am

Gained access to Lamb’s stronghold.

Unlocked: 14 Feb 2013 02:46 am

Either Harvest or Save every Little Sister in the game.

Unlocked: 14 Feb 2013 02:25 am

Fully upgrade one of your Plasmids to the level 3 version at a Gatherer's Garden.

Unlocked: 14 Feb 2013 12:16 am

Kill 30 enemies using only Traps.

Unlocked: 13 Feb 2013 11:39 pm

Uncovered the secret of Dionysus Park.

Unlocked: 13 Feb 2013 11:17 pm

Defeat 3 Big Daddies without dying during the fight.

Unlocked: 13 Feb 2013 11:16 pm

Max out one Research Track.

Unlocked: 13 Feb 2013 08:46 pm

Defeated the Preacher.

Unlocked: 13 Feb 2013 08:41 pm

Hack 30 machines at a distance with the Hack Tool.

Unlocked: 13 Feb 2013 08:11 pm

Spend 2000 dollars at Vending Machines.

Unlocked: 13 Feb 2013 07:48 pm

Confronted Lamb’s lieutenant in Pauper’s Drop.

Unlocked: 12 Feb 2013 11:38 pm

Install the third and final upgrade to any of your weapons.

Unlocked: 12 Feb 2013 11:09 pm

Killed 50 enemies using only hacked Security.

Unlocked: 12 Feb 2013 10:51 pm

Killed an enemy with its own projectile.

Unlocked: 12 Feb 2013 10:00 pm

Research a Splicer with the Research Camera.

Unlocked: 12 Feb 2013 09:48 pm

Joined forces with Sinclair in Ryan Amusements.

Unlocked: 12 Feb 2013 08:14 pm

Defended yourself against the Big Sister without dying.

Unlocked: 12 Feb 2013 08:05 pm

Buy one Plasmid or Tonic Slot at a Gatherer's Garden.

Unlocked: 12 Feb 2013 08:03 pm

Paid your respects to the founder of Rapture.

Unlocked: 12 Feb 2013 07:06 pm

Successfully hack at least one of every type of machine.

Unlocked: 12 Feb 2013 06:53 pm

Adopted a new Little Sister for the first time.

Unlocked: 12 Feb 2013 06:37 pm

Upgrade any weapon at a Power to the People Station.

Unlocked: 12 Feb 2013 03:56 pm

Defended yourself against Lamb's assault in the train station.

Unlocked: 12 Feb 2013 03:45 pm

Used the Hack Tool to hack an object at a distance.

Unlocked: 12 Feb 2013 03:45 am

Found your way back into the ruins of Rapture.

Unlocked: 12 Feb 2013 03:42 am

Achieve Rank 40.

Unlocked: 9 Feb 2013 04:26 am

Achieve Rank 30.

Unlocked: 8 Feb 2013 01:18 am

Achieve Rank 20.

Unlocked: 7 Feb 2013 03:58 am

Play at least one non-private match on each multiplayer map.

Unlocked: 7 Feb 2013 12:37 am

Complete your first trial in a non-private match.

Unlocked: 6 Feb 2013 11:55 pm

Achieve Rank 10.

Unlocked: 6 Feb 2013 11:07 pm

Become a Big Daddy for the first time in a non-private match.

Unlocked: 6 Feb 2013 09:16 pm

Complete your first non-private match.

Unlocked: 6 Feb 2013 09:05 pm

Win your first non-private match.

Unlocked: 6 Feb 2013 09:05 pm

Score your first kill in a non-private match.

Unlocked: 6 Feb 2013 08:50 pm

Take down your first Big Daddy in a non-private match.

Unlocked: 6 Feb 2013 08:50 pm

Save your first Little Sister in a non-private match.

Unlocked: 6 Feb 2013 08:49 pm

Use Rebirth to start again!

Unlocked: 11 Feb 2013 05:05 am

Play at least one non-private match on each downloadable content map.

Unlocked: 10 Feb 2013 01:49 am

Win a non-private match in each of the 6 new maps.

Unlocked: 10 Feb 2013 01:49 am

Completed all bonus Protector Trials

Unlocked: 19 Jun 2013 06:24 pm

Earn an A rank in all Protector Trials

Unlocked: 19 Jun 2013 05:28 pm

Earn 36 stars in the Protector Trials

Unlocked: 19 Jun 2013 05:28 pm

Collect 50% of the ADAM available in all Protector Trials

Unlocked: 19 Jun 2013 02:13 pm

Earn 18 stars in the Protector Trial

Unlocked: 19 Jun 2013 02:55 am

Earn 6 stars in the Protector Trials

Unlocked: 18 Jun 2013 03:29 pm

Collect 100% of the ADAM in a single Protector Trial

Unlocked: 18 Jun 2013 03:19 pm

Escaped Minerva's Den

Unlocked: 16 Feb 2013 07:47 pm

Wrested control of the Thinker from Reed Wahl

Unlocked: 16 Feb 2013 07:42 pm

Reached Computer Core Access

Unlocked: 16 Feb 2013 07:34 pm

Resolve all the Little Sisters in Minerva's Den

Unlocked: 16 Feb 2013 07:28 pm

Destroy all 10 Vacuum Bots in Minerva's Den

Unlocked: 16 Feb 2013 07:23 pm

Got 9999 points in one game of Spitfire

Unlocked: 16 Feb 2013 06:48 pm

Reached Rapture Central Computing Operations

Unlocked: 16 Feb 2013 06:28 pm

Kill a Lancer Big Daddy

Unlocked: 16 Feb 2013 05:43 pm